Bug or Mistake??

phirus

Hi!!!!

I'm working in a code that use Qt libraries to manipulate some images. The problem is that I have an error compiling my code when is including the headers of Qt. But this error appear when I use gcc version 5.X. If I used gcc version 4.8 all is fine

The error ....

/opt/Qt/5.6/include/QtCore/qlogging.h:90:44: error: format string argument is not a string type
     void debug(const char *msg, ...) const Q_ATTRIBUTE_FORMAT_PRINTF(2, 3);
                                            ^
/opt/Qt/5.6/include/QtCore/qlogging.h:91:43: error: format string argument is not a string type
     void noDebug(const char *, ...) const Q_ATTRIBUTE_FORMAT_PRINTF(2, 3)

To solve I have to modify the header of qt "src/qtbase/src/corelib/global/qglobal.h" commenting this lines

// enable gcc warnings for printf-style functions
/*#if defined(Q_CC_GNU) && !defined(__INSURE__)
#  if defined(Q_CC_MINGW) && !defined(Q_CC_CLANG)
#    define Q_ATTRIBUTE_FORMAT_PRINTF(A, B)             \
         __attribute__((format(gnu_printf, (A), (B))))
#  else
#    define Q_ATTRIBUTE_FORMAT_PRINTF(A, B)             \
         __attribute__((format(printf, (A), (B))))
#  endif
#else*/
#  define Q_ATTRIBUTE_FORMAT_PRINTF(A, B)
//#endif

What am I doing wrong????

kshegunov

@phirus
Why is this header included at all? I work with g++ 5.x and haven't seen any such errors.

SGaist

Hi and welcome to devnet,

What compiler are you using ?

Do you have a sample code that triggers this ?

phirus

For example I have this code... nothing weird

#ifndef PARTICLE_H_
#define PARTICLE_H_

#include <QVector3D>
#include "global.h"
....
namespace xpore
{

 void integrate( const Node<Model> & node, const QVector3D& refVel, const Config &config )
  {
    Real rvx = ( refVel.x()-vx );
    Real rvy = ( refVel.y()-vy );
    Real rvz = ( refVel.z()-vz );
...
}
}

I'm using gcc 5.3 compiled by me. Also I have tried with gcc 5.2